In this communication, we show how a short-pitch diffractive structure can be used as a low-cost high sensitivity device for refractive index measurements with sensitivity of 10 -2. The device consists of a photoresist diffraction grating put in optical contact with a hollow prism used as a container for a test material. Its main advantage is the possibility to monitor the composition of solids, fluids and gases in real time. Knowledge of optical parameters of a system with high accuracy can be vital when working in the biological/medical field.
Holographic Grating Based High Sensitivity Device for Refractive Index Measurements
CAPUTO, Roberto;
2010-01-01
Abstract
In this communication, we show how a short-pitch diffractive structure can be used as a low-cost high sensitivity device for refractive index measurements with sensitivity of 10 -2. The device consists of a photoresist diffraction grating put in optical contact with a hollow prism used as a container for a test material. Its main advantage is the possibility to monitor the composition of solids, fluids and gases in real time. Knowledge of optical parameters of a system with high accuracy can be vital when working in the biological/medical field.File in questo prodotto:
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